上市公司在进行重大的购买、出售、置换资产的时候必须要遵循保证上市公司的可持续发展和其它股东合法利益的原则。()

A. the workforce classification is as wrong as the education system.
B. twenty-first-century workforce are separated from the needs of the business world.
C. white-collar workers are only part of the problem of education system.
D. blue-collar manual laborers are needed in agrarian-aged America.